Miranda rights are only used in a criminal case not civil. Trust me i see your point, but my email states she is using the kids as property, which the judge will not be thrilled with. The court looks out for the best interest of the children, and keeping them from a Father who has done nothing to harm or endager their children will not look good, again my opinion.
My kids need to see me, and I will do what it takes to make that happen, within my rights of course.